I'm not sure if this is easy/cheap or if its too much work but it would be a great way of increasing the game difficulty but also the life of the colony.
Summary level above:
Positive effects for players:
One level above ground would be great for watchtowers, green areas instead of hydropondics, dropzones, watergathering, longer field of view (if fog of war), stationary defences and so on. Bigger colonies.
Negative for player:
Raiders can land on roof.
Summary level below ground:
Positive effects for player:
Incitament to continue with the same colony, more minerals and metal below ground, bigger colonies, watergathering maybe and so on.
Negative effects of digging below ground:
Raiders can dig under walls and attack from below, raiders can "meet" you while you dig, other threats might be lurking about, big ants and such.
Would be a nice addition to the game but I completely respect the work behind something like this so it might not be something that is duable.
Summary level above:
Positive effects for players:
One level above ground would be great for watchtowers, green areas instead of hydropondics, dropzones, watergathering, longer field of view (if fog of war), stationary defences and so on. Bigger colonies.
Negative for player:
Raiders can land on roof.
Summary level below ground:
Positive effects for player:
Incitament to continue with the same colony, more minerals and metal below ground, bigger colonies, watergathering maybe and so on.
Negative effects of digging below ground:
Raiders can dig under walls and attack from below, raiders can "meet" you while you dig, other threats might be lurking about, big ants and such.
Would be a nice addition to the game but I completely respect the work behind something like this so it might not be something that is duable.